<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link href="MyCss.css" type="text/css" rel="stylesheet">
</head>
<body>
    <p><strong>p标签Hello Css</strong></p>
    <ul>
        <li><strong>li标签Hello Css</strong></li>
    </ul>
</body>
</html>